Commercial building solar panels across Cardiff
We arrange roof surveys on offices, retail units, hotels and leisure buildings throughout Cardiff, model what each roof can carry against the building's own consumption, and arrange the design, the grid application and the install through our MCS-certified partner.
- Modelled yield
- 922 kWh/kWp/yr
- Mean across Cardiff towns, EU PVGIS v5.2
- Network operator
- National Grid Electricity Distribution
- G99 applications and export limits
- Commercial stock
- 4,120 office / 3,190 retail
- VOA rating list, March 2025
- Commercial rooftop schemes
- 0 on record
- REPD Q1 2026, districts we cover
- Towns covered
- 4
- Surveys arranged county wide
What the data says about Cardiff
Modelled yield varies across Cardiff: Canton comes out at 936 kWh per kWp a year against 908 at Splott. On a 210 kWp commercial roof that gap is about 5,880 kWh a year.
Across the authority our Cardiff towns sit in, the Valuation Office Agency lists 4,120 office and 3,190 retail properties, 130 of them large-format stores and retail warehouses. Source: Valuation Office Agency, Non-domestic rating: business floorspace, 31 March 2025 (published December 2025), counts and floorspace by special category code and local authority district, England and Wales.
The planning database records no roof-mounted commercial schemes in the districts we cover in Cardiff. That usually means arrays have gone in below its reporting threshold, not that none exist: many commercial roofs carry less than a megawatt and never appear.
Connections across the county run through National Grid Electricity Distribution. Anything above 3.68 kW per phase needs a G99 application, and the export limit offered shapes the design, so the question is asked before the array is sized.
- Canton 936 kWh/kWp
- Cardiff Bay
- Cardiff City Centre
- Cathays 908 kWh/kWp
- Pontcanna 936 kWh/kWp
- Splott 908 kWh/kWp
Book a survey in Cardiff
Send the postcode, the rough footprint and whether you own or lease the building. We come back with what the roof can carry, what it would generate against your consumption, and what the funding routes look like.